Strap for Flight Timer² Day Date Stainless Steel / Black / Leather

The lug width of this model is precisely 21 millimetres. This measurement represents the internal distance between the case lugs where the strap is attached. Compatibility with aftermarket straps depends absolutely on this specification: an incompatible lug width will compromise both aesthetics and mechanical stability.

For the Flight Timer, cognac alligator or dark brown vegetable-tanned calf leather are the optimal choices: they emphasise the formal severity of the watch and develop a rich patina over time. For informal contexts or year-round wear, a cotton-polyester NATO or FKM rubber strap offers a contemporary alternative whilst maintaining functional coherence.

Strap replacement requires a spring bar tool to insert and extract the suspension pins. Position the watch on a flat surface, use the tool to gently push one pin inward and free the lug, then repeat on the opposite side. Install the new strap by aligning the pins through the lug holes and ensure symmetrical positioning relative to the case.

Yes, provided the lug width is exactly 21 millimetres. Artisanal aftermarket straps offer guaranteed compatibility with the Flight Timer and typically superior construction quality compared to OEM straps. Always verify the lug width specification before purchase.

Durability depends on frequency of use and tanning method. Vegetable-tanned calf, with periodic maintenance (gentle cleaning and natural wax conditioning), maintains structural integrity for 5–7 years of daily wear. Alligator leather lasts considerably longer, up to 8–10 years. Visual wear (patina, minor creasing) does not compromise mechanical function.